As seven alien races struggle to co-exist in an uneasy alliance, the Inter-Stellar Union sends Union Guard agents on missions to preserve the crucial balance. These specialized operatives must do what regional security cannot, dealing with smugglers, pirates, terrorists, and even greater challenges in order to bring stability to a universe that needs it desperately. Without the Union Guard, the races will not be prepared to face a looming alien threat they can only hope to defeat together.